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Finding the Fourth Proportional to 214,772.32, 321,886.32 and 121,330.72

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Solution

The fourth proportional to 214,772.32, 321,886.32 and 121,330.72 is: 181,842.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,772.32 : 321,886.32 = 121,330.72 : x
  2. Step 2: Convert to fraction form
    214,772.32/321,886.32 = 121,330.72/x
  3. Step 3: Cross multiply
    214,772.32x = 321,886.32 × 121,330.72
  4. Step 4: Simplify right side
    214,772.32x = 39,054,698,963.75
  5. Step 5: Solve for x
    x = 39,054,698,963.75/214,772.32
  6. Step 6: Final answer
    x = 181,842.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.